[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Types](https://evolu.dev/docs/api-reference/common/Types) › Digit1To9

```ts
type Digit1To9 = Exclude<Digit, "0">;
```

Defined in: [packages/common/src/Types.ts:265](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Types.ts#L265)

Digit 1-9. Useful for template literal type validation.